The way the circuit interprets the signal out of the box is 900-2100μs will give you a 120 degree rotation total. With the programmer, you can change that so that the servo will rotate 180 degrees with a 900-2100μs signal. Your HPP-21 will let you do that, you just have to set the center and EPA's. But generally you don't use 180 degree rotation with airplanes, 120 degrees is plenty enough.

We don't have any documentation on it that I'd be able to post, the HPP-21 should have a general guide that came with it.

Thanks I got most of it figured out last night playing with it. If you couple enlighten me on the End Points. Example if I go into Program , set the center as it comes out of the box, and then grab the Handle and drag it Right or Left it spits out a number from 0 to 215, and 0 - -215. I stretched it out to 215 and -215 and got the 180 degree rotation. Is there any kind of Scale?

I think I got close by doing simple ratios that 90 degrees = 215, thus 45 degrees os 107/108. Put another way if I wanted to keep 120 degree Rotation to set the handles to 143 and - 143.

Thanks I got most of it figured out last night playing with it. If you couple enlighten me on the End Points. Example if I go into Program , set the center as it comes out of the box, and then grab the Handle and drag it Right or Left it spits out a number from 0 to 215, and 0 - -215. I stretched it out to 215 and -215 and got the 180 degree rotation. Is there any kind of Scale?

I think I got close by doing simple ratios that 90 degrees = 215, thus 45 degrees os 107/108. Put another way if I wanted to keep 120 degree Rotation to set the handles to 143 and - 143.

Am I on the right track? Seems to be close.

The numbers on the programmer don't actually mean anything or correspond to any particular degree of motion, they are just for reference on the programmer to tell you how far out from 0 you are. Move the servos center and end points to where you want them and set them, the servo will move to those positions when given the right signals from your transmitter.